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Fri, 29 May 2020 15:24:16 +0000 (UTC) Subject: Re: [PATCH 3/3] numa: Initialize node initiator with respect to .has_cpu To: Igor Mammedov References: <20200529170948.5bdb3316@redhat.com> From: Michal Privoznik Message-ID: <373e2c57-796e-9db1-14b7-6f7fc1f7100d@redhat.com> Date: Fri, 29 May 2020 17:24:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.1 MIME-Version: 1.0 In-Reply-To: <20200529170948.5bdb3316@redhat.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=207.211.31.81; envelope-from=mprivozn@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/29 01:27:49 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jingqi.liu@intel.com, tao3.xu@intel.com, qemu-devel@nongnu.org, ehabkost@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 5/29/20 5:09 PM, Igor Mammedov wrote: > On Fri, 29 May 2020 15:33:48 +0200 > Michal Privoznik wrote: > >> The initiator attribute of a NUMA node is documented as the 'NUMA >> node that has best performance to given NUMA node'. If a NUMA >> node has at least one CPU there can hardly be a different node >> with better performace and thus all NUMA nodes which have a CPU >> are initiators to themselves. Reflect this fact when initializing >> the attribute. > > It is not true in case of the node is memory-less Ah, so the node has CPUs only then? Okay, right now my libvirt patches don't allow that, but formatting initator for all NUMA nodes should be trivial. Michal